Vijay Siddhartha B S, and Ranjini BN. “Femoral Nerve Block and Intravenous Fentanyl for Positioning During Spinal Anesthesia in Surgery of Femur Fractures: Hemodynamic Changes”. Academia Anesthesiologica International 4, no. 2 (January 9, 2020): 346-349. Accessed April 28, 2026. https://www.aijournals.com/index.php/aan/article/view/1309.